Proto (tools)
| Company type | Subsidiary |
|---|---|
| Industry | Manufacturing |
| Founded | Los Angeles, California, United States (1907) |
| Founder |
|
| Headquarters | , United States |
| Products | Industrial tools |
| Parent | Stanley Black & Decker |
| Website | protoindustrial.com |
Proto Tools (formally Stanley Proto) is an American industrial hand tool company. Founded as Plomb, it is presently a division of Stanley Black & Decker. The company is credited with creating the first combination wrench in 1933.